package com.javaeedev.lightweight.mvc.sample.web;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * Set request's character encoding to UTF-8.
 * 
 * @author xuefeng
 */
public class EncodingFilter implements Filter {

    private Log log = LogFactory.getLog(getClass());

    public void init(FilterConfig filterConfig) throws ServletException {
        log.info("Request character encoding is set to UTF-8.");
    }

    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        request.setCharacterEncoding("UTF-8");
        chain.doFilter(request, response);
    }

    public void destroy() {
        log.info("EncodingFilter destroyed.");
    }

}
